NORTHFLANK · Vendor
NO FIX YET
A node image security release made the host filesystem go read-only when certain workloads ran, so nodes in Northflank's London region became unresponsive. The incident was a stability outage, and the sources describe no attacker gain.
first public Dec 11, 2025 · 1 source
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Teams running workloads on Northflank's London region may have seen partial outages for some workloads between 13:54 and 14:33 GMT on Dec 11. The sources do not describe a data path or configuration that makes a workload exposed to attack, and they do not say which workloads triggered the read-only filesystem. Teams not using London nodes are not described as affected.
Not affected if other-regions
Who cares kubernetes, london-region, northflank, security
Unknown from the sources.
Unknown from the sources.
Type: Incident Duration: 39 minutes
Affected Components: Networking, Addons, Jobs, Services,
Northflank Platform → Dec 11, 14:33:03 GMT+0 - Resolved - The incident has been resolved and the cause identified. A node image security release lead to the host filesystem going into a read only mode when interacting with a specific set of workloads causing the node to become unresponsive. We have implemented a mitigation and are working on a permanent solution. Dec 11, 14:13:28 GMT+0 - Monitoring - The mitigation is in place and the region is operating as expected. Dec 11, 13:54:32 GMT+0 - Identified - There are currently issues with node stability in the London region leading to partial outages for some workloads. The team has identified the issue and is implementing a mitigation.
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